P0C71 OBD Error Code: Problem & Solutions

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Error code P0C71? Don’t know how to comprehend and treat the error code? Well, we have written down here all the information you’ll need. The OBD-II code wiring issue in technical terms is determined as a hybrid battery temperature sensor "D"/"E" correlation. It should be noted that the hybrid battery pack employs numerous sensors to regulate the temperature of each battery cell. Also, even if one of the battery temperature sensors report an unthinkable temperature, the code P0C71 sets in. There is a high probability of a failure in the high voltage system if more than one sensor fails.

Well, it can be observed that the battery temperature sensors are situated in 3 different places in the HV battery. Each battery temperature sensor has thermistors built in it. Also, the resistance of the thermistor tends to change with variations in the HV battery temperature. As the thermistor resistance rises, the battery temperature falls. On the contrary, the temperature increases with a decreasing resistance. The power management control ECU receives the value of the HV battery temperature detected by the battery temperature sensors used by the battery smart unit. On the basis of the result, the power management regulates the blower fan. (Whenever the HV battery temperature rises above the specified levels, the blower fan starts)

What causes this problem with the Hybrid Battery Temperature Sensor "D"/"E" Correlation?

• A damaged hybrid battery thermistor
• A defective battery smart unit
• The harness in the hybrid battery thermistor is open or short circuited
• A bad electrical connection in the hybrid battery thermistor circuit

1. Hybrid Battery Thermistor - Strange engine noises, the engine frequently running, instead of the normal switching to both ICE and electric motors is likely to noted due to a failure in the hybrid battery thermistor. Get your error code fixed instantly with a hybrid battery thermistor. Parts Avatar right place that provides the best hybrid battery thermistors across the country.
2. Battery Smart Unit - A bad battery smart unit is likely to cause a significant fall in the fuel consumption of the vehicle (45-22 MPG). Apart from this, even a minor fault in the battery smart unit leads to shortening of the life span of the entire system. Repair or replace it now from Parts Avatar before it gets too late. We are just a click away! Tune in now.
3. HV Battery Assembly - Stressed? See the error code P0C71 flashing again and again? A bad connection is the first thing the driver will observe as soon as the battery assembly is damaged. In addition to this a bad battery assembly if used for a longer span of time is likely to cause a failure in the battery leading to an expensive and time taking repair.
4. High Voltage Battery Interface Control Module (HV BICM) - Facing the error code P0C71? An inferior quality or a defective high voltage battery interface control module (HV BICM) can always be hazardous for the system also it is one of the primal causes stimulating the error code P0C71. Tune into Parts Avatar for supreme quality high voltage battery interface control module (HV BICM) at economical prices.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0C71 code by mentioning some major symptoms below:

Common Symptoms

• The engine light flashing

Have a look at some ways with which you can correct the P0C71 code:

• Replacements or repairs should be performed if the hybrid battery thermistor is defected
• Measures should be taken in order to fix a bad electrical connection in the hybrid battery thermistor circuit
• Change or restore a faulty battery smart unit
• Any harness in the hybrid battery thermistor that is corroded or loose should be repaired or changed right away

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of hybrid vehicle motor, hybrid vehicle motor Harness, engine control unit (ECU), drive motor position sensor, ECU, blower fan, electronic control unit, BICM, battery temperature sensor, high voltage system parts and a lot more. We are sure that now all your issues would be resolved.

A scanner (or code reader) and a digital volt/ohmmeter will be helpful in successfully diagnosing this code-storing condition. Begin your diagnosis with a visual inspection of system wiring, connectors, and components. Repair or replace any open, shorted, damaged, or corroded items as required and retest the system to make sure that repairs were successful. If the system wiring, connectors, and components appear to be in normal working order, connect the scanner to the diagnostic connector and record all stored trouble codes and freeze frame data. This information can be extremely helpful in diagnosing intermittent conditions that may have contributed to this code being stored. After the codes are cleared, operate the vehicle to see if the code returns. If the code fails to immediately return, you may have an intermittent condition.

Common Mistakes When Diagnosing the P0C71 Code

Here we have listed for our customers a few common mistakes that should be avoided while performing the diagnosis:

• A malfunction in the high voltage battery assembly
• A faulty high voltage battery interface control module
• Wiring problems in the system